<?php
$server=$_GET['server'] ?$_GET['server'] :'';
?>

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>用户中心</title>
</head>
<body>
<h2>某集团下的统一登录入口</h2>
    <form action="./login.php" method="post">
        <p>
            账号:<input type="text" name="username">
        </p>
        <p>
            密码:<input type="text" name="password">
        </p>
        <input type="hidden" name="server" value="<?php echo $server;  ?>">
        <p>
            <input type="submit" value="登录">
        </p>
    </form>
</body>
</html>